<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>outline属性的妙用</title>
  <style>
    * {
      padding: 0;
      margin: 0;
    }

    ul {
      list-style: none;
      width: 600px;
      margin: auto;
    }

    li {
      padding: 10px;
      border: 10px solid pink;
      outline-offset: -10px;
    }

    li+li {
      margin-top: -10px;
    }

    li:hover {
      /* border:10px solid gold; */ /*border的话 后面的会覆盖前面的, 而outline不会*/
      outline:10px solid gold;
    }
  </style>
</head>

<body>
<ul>
  <li>1</li>
  <li>2</li>
  <li>3</li>
  <li>4</li>
  <li>5</li>
  <li>6</li>
</ul>
</body>

</html>
